Oiling system for motors.



Av LOOMIS.

0mm; SYSTEM FOR MOTORS. APPLICATION HLED MAR. 20, 1913.

mamas,

PatentedNov. 16, 1915 motor.

UNITED STATES PATENT OFFICE. l

ALLEN LOOMIS, OF DETROIT, MICHIGAN, ASSIG-NOR TO PACKARD MOTOR CARCOMPANY, 0F DETROIT, MICHIGAN, 'A CORPORATION OF MICHIGAN.

OILING SYSTEM FOR MOTORS.

j Specification of Letters Patent.

Patented Nov. 16. 1915.

ylicaticn filed March 20, 1913. Serial No. 755,70?

Another object of the invention is to proride means in a multi-cylindermotor for feeding oil to one of the main bearings of the crank shaft,thence carrying the oil to another of the main bearings through one ofthe crank pins, and. then delivering oil from the second main bearing tothccrank pin bearing.

Other objects of the invention will appear from the followingdescription taken in connection with the drawings which form apart ofthis specification, and in which,

Figure 1 is a side elevation of a six-cylinder motor embodying thisinvention,,parts of the .crank case and the crank shaft. being brokenaway; Fig. 2 is a section through the forward end of the crank shafton-the line 2 of Fig. 1; Fig. 3 is a transverse section approximately onthe line 3-3 of Figs.

land 2; and Fig. A} is an enlarged sectional detail view through one ofthe crank pins.

Referring to the drawings, 10 represents the motor base or upper half ofthe crank case, upon which the three cylinder blocks 11 are mounted.These blocks each comprise two cylinders, making this a six-cylinder Thelower half of the crank case is represented at 12, and between thesehalves is supported the crank shaft 13 in bearings 14. In the motorshown there are seven of these main bearings-l4, one large one at thefront end and'one at the rear of each of the crank pins 15 of the crankshaft. There are, of course, siX of these cranks or crank pins 15 forthe six-cylinder motor shown, and to each of them there is connected aconnectin' rod 16 through a bearing 17."

Means for feeding oil under pressure directlyto someof the main crankshaft bearings 14 comprises an oil pump 18, and a pipe,

19 leading to a strainer 20and from thence to a manifold 21. From-themanifold' l the oil is led through branch pipes 22, 23, 24 and mainbearings.

25 to the main crank shaft bearings 14 at the front and rear ends of themotor and to the I main bearings between the cylinder blocks,

Branch pipes 26 are shown alsofor feeding oil directly to the pistonsand cylinder walls.

tion, it is impracticable to feed oildirectly to the second, fourth andsixth main bear- I ings l4, and the present invention contemplatesfeeding oil to these hearings indi-. rectly through the crank pins fromthe other A novel method of doing this will now be described. A

The crank shaft '13 is drilled out at each of its main bearings as" at27, and each of the crank pins 15 is drilled out as ch28. Openings 29lead from these drilled out. portions of the crank shaft to the bearings14 and 17 for supplying these hearings with. oil under pressure. "A tube30 may also lead from thejcrank pinbearings mum piston pins, not shownin the drawing. The for ward check of the crank 15 shown insection inFig. 1 is drilled, as'at 31, and the rearward check is drilled, .as at32, and these two drilled channels are connected by a U. shaped tube 33,which is arranged in the opening 28. The method of flswaging the ends ofthe tube 33 in the drilled passages 32 is shown clearly in Fig. 4. Thesecond crank pin 15 is provided with the same drilled openings and tube,so that oil fed through'the interior of the first and third main crankshaft bearings is led therefrom.

bearing 14.

For the purpose of feeding oil from the second m'aincrank shaft bearingto the 'crank pin bearings at either 1 side thereof,

the rearward check of the first crank 15 is provided with a drilledpassage or conduit 34;, and the forward check of thelsec'ond crank isprovided with a similar drilled conduit, so that the oil which reachesthe interior of the second main bearing and does not pass out: throughthe bearing itself is delivered to the crank pins'where 'it isdistributed to thejsurface of the bearingsl'l through the passages 29and 'to'thepiston pin through the tube 30. It wilh'of course,

be unde'rstood thatthe other cranks of the; I

m Me e Provided we was at 60. Because of the block cylinder 'construcvas are these first two cranks, so that the oil I delivered to-the thirdmain bearing is distributed from there to both the second and v fourthmain hearings; tl1e oil delivered to Iclaimis:

' 1.' In a motor, the combination :with twothe fifth main bearing isdistributed to the fourth and sixth main bearings-and the oil delivered;to the seventh main bearing passes on to the sixth main bearing. Also,

i it will be understood that oil which reaches thesecond, fourth andsixth main bearings is further distributed to allof the crank pinbearings; By. thus delivering oil through imperforate conduits and tubesfrom one of the main hearings toanother,-

it is found that centrifugal force does not interfere with the positivedelivery.

A specific embodiment of the invention has been described in detail,which embodiment is deemed to be new and advantageous and will bespecifically claimed, but

it shouldbe understood that the invention is'not limited to the exactdetails of construction shown, as it will be apparent that changes maybe made without departing from the spirit or scope of theinvention.

Having t us described mylinvention, what main bearings for the "crankshaft and .means for feeding oil to one of said bearings, of a crankshaft mounted in said bearngs with a crank pin between said bearmgs andhaving means for carrying 011 from the bearina to which oil is fedfio'the other of said bearings, andhaving also means formed separately fromsaid first means for cal-living oil from a main 'bearing' to said crankpin bearing} 7 5' v I 2. In a motor, the combination Wltl'l two mainbearings for the crank shaft and means v for feeding oil to one of saidbearings, of a crankshaft mounted in said bearings with a crank pinbetween said bearings, said crank shaft having conduits formed thereinto lead oil from said oil fed bearing to the other main beari-ngand fromthe latter main bearing to sa d crank pm bearing 3. In a motor, thecombination With two main bearings for the crank shaft and means forfeeding oil to one of said bearings, of a crank shaftmolmted-inisaiilbearings, said crank shaft havin conduits for ed thereinto lead oil. through separate cha els from, I

said oil fed bearing to the other main bear ing and from one of saidmain hearings to the crank pin bearing respectively.

, ank shaft mounted iii said bearings, said crank shaftbeing hollow atsaid main bearings and at the crank pin and being drilled with oneconduit from the oil fed bearing t0 the crank pin and with two conduitsfrom the other main bearing to the crank pin, and a tube connecting thesingle conduit with one of the other conduits.

6. In a motor, the combination with twomain bearings for the crank-shaftand means for feeding oil to one of-said bearings, of a crank shaftmounted in said bearings and having its crank pin between said'bearings,

said crank shaft having a conduit leadinfrom said oil fed bearing to theother: main bearing passing/through said crank pin, and

a"second conduit from the. latter said hearing to the crank pin bearing7. In a multi cylinder motor, the combrnation with a crank case havingat least three main bearings therein and means for feeding oil underpressure directly to two outside bearings only of said three bearings,

of a crank shaft mounted in said main bear-v ings and having-cranks andcrank pins on both sides" of the ,middle bearing-of said three bearings,saidcrank shaft having conduits therein'leading from the outside-mainhearings to the middle bearing and conduits leading from the middlebearing to the irank pin bearings.

;- In testimonywhereof l aflix my signature n the presence oftwowitnesses. I H

. ALLEN LOOMIS.

l Witnesses: JOHN D. WILSON, FRANK L. LLOYD. I

